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A cataract is a cloudy area in the lens of the eye that leads to a decrease in vision of the eye. [1] [7] Cataracts often develop slowly and can affect one or both eyes. [1] Symptoms may include faded colours, blurry or double vision, halos around light, trouble with bright lights, and difficulty seeing at night. [1]
Like your eye’s natural lens, an IOL focuses light that comes into the eye through the cornea and pupil onto the retina, the sensitive tissue at the back of the eye that passes along images to ...
Visual or vision impairment (VI or VIP) is the partial or total inability of visual perception.In the absence of treatment such as corrective eyewear, assistive devices, and medical treatment, visual impairment may cause the individual difficulties with normal daily tasks, including reading and walking. [6]
When the eye is dilated, the pupils widen so that the ophthalmologist can see the back of the eye more clearly. The ophthalmologist will look for signs of cataracts, glaucoma, and will examine the retina and optic nerve. During this comprehensive eye exam, a refraction and visual acuity test will also be performed. These tests assess the ...
Cataract surgery is the most common application of lens removal surgery, and is usually associated with lens replacement. It is used to remove the natural lens of the eye when it has developed a cataract, a cloudy area in the lens that causes visual impairment. [4] [10] Cataracts usually develop slowly and can affect one or both eyes. [4]
PEX has been known to cause a weakening of structures within the eye which help hold the eye's lens in place, called lens zonules. [2] The literature recognizes pseudoexfoliation syndrome as a risk factor in cataract surgery. A review based on 999 eyes with pseudoexfoliation reported 156 intra- or postoperative incidents.
Cataract surgery is the removal of the natural lens of the eye that has developed a cataract, an opaque or cloudy area. [3] Over time, metabolic changes of the crystalline lens fibres lead to the development of a cataract, causing impairment or loss of vision.
The primary causes include post-cataract surgery, certain medications, and, less commonly, neurological or ophthalmological conditions. Post-cataract surgery is a common cause, as replacing the natural lens with a synthetic one increases exposure to blue light, leading to temporary blue-tinted vision. This effect usually resolves as the eye adapts.
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